Kinney, J. (2007). Dairy of a Wimpy Kid: Old School. Penguin Books.
Chicago Style (17th ed.) CitationKinney, Jeff. Dairy of a Wimpy Kid: Old School. London: Penguin Books, 2007.
MLA (9th ed.) CitationKinney, Jeff. Dairy of a Wimpy Kid: Old School. Penguin Books, 2007.
Warning: These citations may not always be 100% accurate.